Operating device for disk ink-erasers.



F. H. CALL. I

OPERATING DEVICE FOR DISK INK ERASERS.

APPLICATION FILED JULY 11- 1918.

1,302,763. Patented May 6,1919.

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FRANKLIN HALE CALL, OFPOR'ILAND, OREGON.

OPERATING DEVICE FOR DISK INK-ERASERS.

Application filed July 17, 1918.

To all whom it may concern:

Be it known that I, FRANKLIN HALE CALL, a citizen of the United States, residing at Portland, in the county of Multnomah and State of Oregon, have invented certain new and useful Improvements in Operating Devices for Disk Ink-Erasers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to an operating device for disk ink erasers and has for its object the construction of a simple and eflicient device that will collect the waste during the erasing process, and which device can be accurately adjusted on the work when it is desired to make an erasure.

With this and other objects in view this invention consists of certain novel combinations, constructions and arrangements of parts, as will be hereinafter fully described and claimed.

In the drawings:

Figure 1 is a longitudinal sectional view of my device taken on line 11, Fig. 2, and looking in the direction of the arrows.

Fig. 2 is a fragmentary top plan view of the device.

Fig. 3 is a view in front elevation of the front end of the device.

Fig. 4 is a transverse sectional view taken on line 44, Fig. 2, and looking in the direction of the arrows.

Fig. 5 is a horizontal sectional View taken on line 5-5, Fig. 1, and looking in the direction of the arrows.

Fig. 6 is a rear view, in elevation, of the pivoted lever of the device.

Fig. 7 is a sectional view taken on line 7- Fig. 6, and looking in the direction of the arrows.

Referring to the drawings by numerals, 1 designates the handle of the device, which handle is provided with an integral forwardly-eXtend-ing casing portion 2; the handle- 1 also being hollow for receiving part of the mechanism as well as the forwardlyextending portion 2.

Near the front end of the portion 2 I mount a thumb nut 3; by means of this ordinary fastening device I adjustably secure the rubber and waste-collector 4; the collector 4 is provided with an elongated slot 5 (Fig. 1) so as to allow of a sliding adjustment on the outer end of the handle-casing.

A resilient guard 6 is fastened at 7 to the front end of the collector 4, and in this guard Specification of Letters Patent.

erasing something on y 27 is coiled around Patented May 6, 1919.

Serial No. 245,349. I

6 is an elongated slot or opening 7 through which the peripheryof the rotary disk eraser 8 extends when the device is in operation for a sheet. The guard 6 is placed free against the work and only that portion covered by the opening 7 of the guard will be erased. By reason of the resiliency of the guard 6 it prevents, to a great degree, injury of the device should the device be placed suddenly against the work; in other words the'guard 6 acts in the capacity of a spring bumper for the entire device as the same is pressed against the work to be erased.

The disk eraser 8 (Fig. 4) is mounted upon the threaded sleeve 9, carried by the shaft 10. The shaft 10 is provided with a head 11 at one end, and upon the other end is mounted the pivoted spring latchl2, the latch 12 be- 1 g pivoted at 13 upon the forw, rdly-extendmg portion 2 of the casing.

spring 14 to keep the latch from being accidentally forced off one end of theshaft 10 (Figs. 2 and 4). The sleeve 9 is integral with a disk-portion 15 that is provided with penetrating spurs 16, and on the sleeve 9 is mounted a disk 17 that is provided with penetrating spurs 16, and a thumb nut 18 is threaded upon sleeve 9 and clamped against disk 17 by causing the spurs 16 of disks 15 and 17 to enter the rubber eraser 8 and hold it against independent rotary movement upon the sleeve 9. a

Integral with sleeve 9 is a sprocket wheel 19, and mounted upon the sprocket wheel is a ribbon belt 20, which belt 20 is provided with openings engaged by the sprocket of wheel 19, as well as by the dogs 21 and 22.

The primary dog 21 is pivoted at 23 upon the lever 24, and the auxiliary dog 22 is piv oted at 25 near the end of lever 24. The lever 24 is pivoted at 26 within the lower part of the handle-casing 1, and this lever is U- shaped in cross-section, as clearly seen in Figs. 6 and 7, which permits of spring 27 to be placed therein, at its outer end, after causing the lever 24 to normally move to its outer position, shown in Fig. 1. The spring pin 28, and as the spring 27 and its mounting is of an ordinary structure I am not specifically describing the details thereof; it is obvious that the spring 27 exerts an outward pressure or push upon lever 24 at all times.

The ribbon-belt 20 passes around wheel The latch 12 is engaged by the bowed 22 will carry the belt 24 forwardly, and upon the operator gripping the handle of the devicev and pressing inwardly on lever 24 the.

auxiliary dog 22 will rise out of the apertures in the belt 20, permitting the primary dog 21 to draw the lower run of the beltbackwardly and by the continuous alternating action of the two dogs when the device is in operation, continuous rotary movement will be imparted to the rotary disk eraser 8.

By slightly swinging the latch outwardly to clear the end of the shaft 10 and then raising the latch vertically as shown in Fig. 1, and then unscrewing the nut 18, a new eraser 8 can be quickly placed upon the device. Further, by adjusting the collector l the guard 6 can be adjusted to provide for any wear occurring upon the disk 8, and in this manner the disk can be entirely used, since the collector for the trash caused by the erasing action and the resilient guard carried thereon can accommodate any other adjustment to the wear on the rotary eraser 8.

The speed of the rotary eraser 8 depends upon the rapidity with which the lever 24 is drawn inwardly, since the spring 27 is strong enough to quickly return the lever 24: to its outer position; all that is needed is for the operator to draw inwardly on lever 24 and quickly release it, which will result in the rotary eraser being driven rapidly through the action of said lever 2st, dogs 21 nd 22 and belt 20.

The collector a is provided with horizoir tal flanges 43* (Fig. 3) that lit in flanged portions 2 formed on the lower portion of the outer end of the forwardly-extendin portion 2 of the handle casing. ,These flanges P of the collector 4: support the collector upon the primary casing and the fastening device 3, together with slot 5, allows the adjustment of the collector at, as hereinbefore described.

What I claim is:

1. In a device of the class described, the combination, with a primary casing, a rotary eraser mounted on the forward end thereof, of a collector provided with a resilient guard, adjustably mounted upon said casing contiguous to said eraser and manually operated means in said casing and cooperating with said eraser for rotating the same.

2. In a device of the class described, the combination with a casing, of a rotary eraser mounted upon said casing, and a lever and belt means carried by said casing and cooperating with said eraser for rotating the same.

3. In a device of the class described, the combination witha casing, of rotary eraser means carried by said casing, a ribbon belt in said casing and cooperating with said eraser means for rotating the same, a springpressed lever carried by said casing and positioned contiguous to said belt, and a plurality of dogs carried by said lever and engaging said belt for driving the belt for imparting rotary motion to the eraser means.

at. In a device of the class described, the combination of a casing provided with inwardly-extending flanges at its forward end, a dust collector provided with outwardlyextending flanges mounted in the inwardlyextending flanges of the casing, a resilient guard provided with an eraser receiving opening secured near its lo er end to said collector, means on the casing and collector for securing the collector upon the casing, a rotary eraser carried by the casing and extending into the collector, and being adapted to project slightly through the eraser opening of the guard, and means carried by the casing and eraser for manually rotating the eraser.

5. In a device of the class described, the combination with a casing, of an axle having one end secured on the casing, a pivoted latch carried by the casing and detachably supporting the other end of said axle, an eraser, means on the axle for detachably clamping said eraser on said axle, and means carried by the casing and cooperating with the clamping means of the eraser for rotating said eraser.

6. In a device of the class described, the combination with a casing, of a lever U- shaped in cross-section, pivotally mounted at its lower end within the casing, a spring carried by the casing and extending into the U portion of the lever, removable eraser means carried by the casing, and means co operating with the eraser means and with the lever for imparting movement to the eraser means when the lever is moved upon its pivot.

In testimony whereof I hereunto aifix my signature.

FRANKLIN HALE CALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

